Lawrence Bittaker serial killer dubbed the "Murder Mack" and "Toolbox Killer.” Bittaker was sentenced to death in March 1981 while his accomplice Roy Norris received 45 years to life. 

6" x 10" handmade Happy Birthday pop up greeting card. The front reads, Yeah it's that time of year again!
When the card opens a birthday cake pops up! 
Hand signed on the back, 2009 @ SQSP, LS Bittaker.
There is an orange marker line on the left inside of the card which has no effect on the cake.
 
Bittaker's pop up cards are among the best prison art or crafts we’ve seen in 30 years of collecting.
Includes the blank manila envelope in which Bittaker placed the card.